How to Start an LLC in Maine

Forming a Maine LLC means filing a Certificate of Formation with the Maine Secretary of State, paying a $175 filing fee, and keeping up with an $85 annual report every year after. It is a straightforward process on paper, but Maine still runs formation filings on paper: there is no online portal for submitting your Certificate of Formation, so you need to plan for mail or in-person delivery and a processing window that can run 40 to 55 business days unless you pay for expedited service. This guide walks through exactly what to gather, what to file, and what to expect at each step of Maine LLC formation.

This article is informational only and is not legal or tax advice. Maine business law and tax rules change, and your situation may have wrinkles a general guide cannot cover. Talk to a licensed Maine attorney or a CPA before you file if your business has multiple owners, outside investors, or anything beyond a simple single-member setup.

What You Need Before You File

Gather these before you sit down with the formation paperwork. Having everything ready keeps you from mailing an incomplete form and losing weeks to a rejection.

• A compliant LLC name. Under 31 MRSA 1508, the name must include "limited liability company," "limited company," or an abbreviation such as "L.L.C.," "LLC," "L.C.," or "LC" (low-profit LLCs use "L3C"). Search the name at the Secretary of State's ICRS business search to confirm it is not already taken.
• A Maine registered agent. Every LLC formed in Maine must continuously maintain a registered agent under the Model Registered Agents Act (Title 5, chapter 6-A). This is either a commercial registered agent listed with the Secretary of State, or a noncommercial agent with a physical Maine street address (a P.O. Box alone does not qualify). The agent must have already consented to serve, and that consent gets certified on the formation document itself.
• Form MLLC-6, the Certificate of Formation. This is a fillable PDF from the Secretary of State, not a web form. You print it, sign it, and mail or hand-deliver it with payment.
• $175 for the filing fee. Add $50 if you want 24-hour expedited service, or $100 for immediate (same-day, in-person) service. The Bureau notes that expedited turnaround depends on staffing and can slip during high-volume periods.
• An EIN plan. You will need a federal Employer Identification Number from the IRS once your LLC is approved, mainly for opening a business bank account and for tax filings.
• Optional: $20 for a name reservation. If you are not ready to file yet but want to lock in your name, Form MLLC-1 reserves it for 120 days.

Step-by-Step: How to Form an LLC in Maine

Step 1: Choose and Check Your LLC Name

Search your proposed name against active Maine entities using the ICRS business search tool. Maine requires the name to be distinguishable from existing registered names on file, and it must contain one of the required LLC designators listed above. If you have a name you love but are not ready to file your Certificate of Formation, reserve it for 120 days with Form MLLC-1 and a $20 fee.

Common mistake: assuming a name is available because it is not in use as a website domain or trademark. The only thing that matters for formation purposes is whether it conflicts with another entity name on file with the Maine Secretary of State.

Step 2: Appoint a Registered Agent

Decide whether you will serve as your own registered agent (if you have a Maine street address and will reliably be there to accept legal documents), ask a trusted contact with a Maine address to serve, or hire a commercial registered agent service. Commercial registered agents typically run $100 to $300 a year and are worth it if you do not have a stable Maine address, want privacy (your home address does not become part of the public record), or travel often. Whoever you choose must consent to the appointment, and that consent is certified directly on the Certificate of Formation.

Step 3: Complete Form MLLC-6, the Certificate of Formation

Download the fillable PDF from the Maine Secretary of State's corporations and commissions page. You will need your LLC's exact name, the registered agent's name and Maine address, and basic organizer information. This is the core document that legally creates your Maine LLC under 31 MRSA 1531.

Step 4: File the Certificate of Formation and Pay the Fee

Because Maine does not offer online filing for LLC formation documents, print the completed MLLC-6, sign it, and either mail it or deliver it in person to the Bureau of Corporations, Elections and Commissions along with a check or money order for $175. If you need it processed faster, add $50 for 24-hour service or $100 for immediate, same-day service, both filed under Secretary of State Rule 29-250 Chapter 200.

Tip: Standard processing runs 40 to 55 business days according to the Secretary of State's own LLC page. If your timeline is tight, the expedited fee is often worth it, but confirm current availability before you count on a specific turnaround, since the Bureau notes that high filing volume can delay even expedited requests.

Step 5: Get Your EIN From the IRS

Once your Certificate of Formation is approved, apply for a federal EIN directly through the IRS website. This is free and typically issued immediately online. You will need the EIN to open a business bank account, hire employees, and file federal and Maine tax returns.

Step 6: Open a Business Bank Account

Keep LLC finances separate from personal funds from day one. Bring your approved Certificate of Formation, your EIN confirmation letter, and your operating agreement (if you have one) to open the account. Commingling funds is one of the fastest ways to undermine the liability protection an LLC is supposed to give you.

Step 7: Draft an Operating Agreement

Maine does not require you to file an operating agreement with the state, but you should still write one, even for a single-member LLC. It documents ownership percentages, management structure, and what happens if a member leaves or the LLC dissolves. Banks and potential business partners often ask to see it.

Step 8: Check Local Licensing Requirements

Maine has no general statewide business license. Licensing and permitting for a general business is handled at the municipal level, so contact the town or city office where you will operate. Certain professions and activities (contracting, food service, cosmetology, and others) still need state-level permits. The Department of Economic and Community Development runs a free tool called Business Answers at maine.gov/businessanswers to help identify what applies to your specific business.

Step 9: Register for State Taxes if Applicable

If you will sell taxable goods or services, register with Maine Revenue Services for a sales tax permit. Maine's state sales tax rate is 5.5%. By default, your LLC is taxed as a pass-through entity, meaning profits flow to your personal Maine income tax return at graduated rates of 5.8% to 7.15%. If you elect corporate tax treatment for your LLC, Maine corporate income tax applies instead, at graduated rates of 3.5% to 8.93%. Maine does not impose a separate LLC franchise tax or annual LLC tax beyond the annual report fee described below.

Step 10: File Your Annual Report Every Year

Maine requires every LLC to file an Annual Report (Form MLLC-13) with an $85 fee, due June 1 each year. Your first annual report is due between January 1 and June 1 of the year following formation. Foreign LLCs (formed outside Maine but registered to do business there) pay $150 instead. Unlike the formation document, the annual report can be filed online through Maine's Annual Report Online portal.

Common mistake: forgetting the annual report because you associate LLC upkeep with the SOS's slow paper-filing process for formation. The annual report is actually the one thing you can, and should, file online, and missing it repeatedly can put your LLC into administrative dissolution.

If You Plan to Operate Under a Different Name

If your LLC will do business under a name other than its legal registered name, you need an assumed name filing. For an LLC or corporation, that is Form ASUM-5, filed with the Secretary of State for a $125 fee. Sole proprietors and general partnerships instead file an assumed-name certificate with the clerk of the city or town where they operate, and those municipal fees vary and are not published statewide, so confirm the exact amount with your local clerk.

Tips for a Smoother Filing

• Because formation filings are paper-only, double-check every field on Form MLLC-6 before mailing. A single error can mean weeks of delay while you refile.
• Keep a copy of everything you send, and consider using a mail service with delivery confirmation given the 40 to 55 business day processing window.
• If you are racing a deadline (an investor closing, a contract start date), budget for the $100 immediate-service fee and plan to deliver the filing in person if possible.
• Set a calendar reminder well before June 1 each year for your annual report. An $85 fee is inexpensive insurance against falling out of good standing.
• Free, hands-on help is available through the Maine Small Business Development Centers and the SBA's Maine district office if you want a second set of eyes on your formation plan.

What You Can Reasonably Expect

Once your Certificate of Formation is accepted, your Maine LLC is likely to be legally recognized as a separate entity from you personally, which generally supports limiting personal liability for business debts and claims, provided you keep finances separate and follow through on required filings. Formation itself does not guarantee any particular tax outcome, financing approval, or liability outcome in a specific dispute; those depend on how the LLC is actually operated and on facts a general guide cannot anticipate. Given the standard 40 to 55 business day processing time, most filers should expect their Certificate of Formation back within one to three months unless they pay for expedited handling.

Final Disclaimer

This article summarizes publicly available Maine Secretary of State and Maine Revenue Services requirements as informational content only. It is not legal or tax advice, and fees, forms, and processing times can change. Before you file, confirm current fees and forms directly on the Maine Secretary of State's website, and consult a licensed Maine attorney or CPA for advice specific to your business.